Your resume and work experience are falsified, and the company background checks you, but they don't tell you that they already know. What should you do?
If you are found out, you'd better confess leniently and resist harshly. No matter whether the boss is willing to forgive your fraud or not, at least you have confessed, at least none of your resume will be fired because of your fraud. If you don't have integrity in the future, how can you get a foothold in society and how can a company want you? So it's better to confess.